First of all, there was a big shift in Congressional states from
"blue" to "red" states. Texas is the huge winner, picking up 4
seats. NY and Pennsylvania both lost seats. California failed to
gain any seats for the first time.

What's also key is that the GOP had a monster 2010 election in
state legislatures, where the actual of redrawing of districts
will occur. So put it together, and you're talking about gains
that will last at least a decade felt across all levels of
politics.